Discharge appliance for railroad tank-cars.



A. E. SMITH. Q DISCHARGE APPLIANCE FOR RAILROAD TANK CARS.

APPLICATION FILED NOV. 29, 1910. 1,136,375..

\ ATTORNEY Patented Apr. 20, 1915.

ABRAM E. SMITH, OF BROOKIIYN, NEW YORK.

DISCHARGE APPLIANCE FOR RAILROAD TANK-OAKS.

Specification of Letters Patent.

Patented a t. 2o. seas.

Application filed November 29, 1910. Serial No. 594,630.

To all whom it may concern:

Be it knownthat I, ABRAME. SMITH, a

citizen of the United States, residing at .following is a specification.

This invention relates to the appliances which are used at the bottomsof the tanks of railroad tank cars for discharging the tank's contents,when desired. A set of such appliances for a. tank car includes adischarge'nozzle which is permanently secured to the outside of the tankand a lift'v'alve which rests, when closed, on a seat at the upper endof the nozzle and best below-the tank floor; so as to empty the tankcompletely when the valve is raised. In case of accident to the carthese nozzles are apt to be bent or broken; and with the valvearrangement heretofore in most common use Such bending orbreaking of thenozzle is apt to dislodgethe' valve from its seat suf-' ficiently toallow the contents of the tank to escape with more or less rapidity.Should thetank contain oil or other inflammable liquid, especially avery inflammable li uid like gasolene, thedirect loss by the acci ent'may be even surpassed by loss from fi're conseqillient on the escape ofthe contents of the tan In the accompanying drawings, Figure 1 is apartial view in vertical section and elevation of the tank of a railroadtank car provided with the appliances of the present invention, in whatis considered the best form of the same, the valve being raised fordischarging; Fig. 2 is a plan view of the valve; Fig". 3 is a side viewof the same; Fig. 4 is a side view of the valve with part of itsoperation rod; Fig. 5is' a plan view of the discharge nozzle; and Fig. 6is a vertical section of the same, in aplane at right angles to that ofFig. 1.

The discharge hozzle a provided at top with an attaching flange b and aseat 0 for the valve is secured by rivets to the bottom of the tank (Zbelow the discharge opening 6 in the tank bottom of somewhat largerdimensions in all directions than the valve seat a and valve f; so thatthis last may pass through said opening in order to rest on its seat 0.The v'alve f is provided on top with ears 9 by which 1t is secured tothe lower end of the valve operation rod h (Fig. 4.)- This rod it can beguided and operated in any suitable way, it being common to provide acam for ralsing and a spring for holding down the corresponding rod andvalve in railroadtank cars.

The valve f is provided underneath with a stout but very shallow guideportion 70 and with a readily flexible or breakable guide pin mprojecting below the same. The guide pin m may be made of soft steel orother metal which can be readily bent. The portion is is guided by thewalls of thedischarge nozzle a; and the pin m is guided by the walls ofa small hole a in the guide p inside of said nozzle.

Below the guide 3) is a groove q for weakening the resistance tobreakage of the nozzle at that point as compared with its resistanceabove said groove. It is considered best also to extend the guide 39across the nozzle bore so that it will act as a brace inside the nozzle.The depth of the guide portion is on the valve would best not exceed thethickness of the attaching flange Z) of the discharge nozzle; so as tobe removed from pressure tending to dislodge the valve, in

case the discharge nozzle should be broken rod h, and smaller than therivets by which (as shown) the attaching flange b of the nozzle a issecured tothe tank 03. It may well be made of steel or wrought iron andbe about half an inch in diameter.

I claim as my invention or discovery:

1. In combination with the tank of a tank car, which tank has adischarge opening at its bottom; a discharge nozzle secured to thebottom of the tank, registering with the discharge opening and providedwith a breaking point below the discharge-opening of the tank; a guidewithin the nozzle extending across it; a valve for opening and.

closing the discharge opening; and a pin carried by said valve, passingthrough an opening in the guide and extending below the breaking pointof the nozzle when the valve is seated and of a resistance which permitsof its being bent withofit unseating the valve. 2. In combinationnwiththe tank of a tank car which tank has a dischargeopening in its bottom;a discharge nozzle secured to the bottom of the tank and registeringwith the discharge opening; a guide extending across the nozzle; a valvefor opening andclosing the discharge opening; and a pin projecting fromthe valve and through the guide and capable of being bent withoutunseating the va ve.

3. In combination, a tank oar having a discharge opening at its bottom;a discharge nozzle secured to the tank bottom and registering with saidopening, said nozzle hav ing a breaking point; a valve for said openingand having its seat above said breaking point; means for moving saidvalve to and from its seat; and means connected with the Copies of thispatent may be obtained for discharge nozzle secured to the tank belowthe valve and provided with a breaking point; and means comprising a pinlocated within the nozzle and carried by the valve which, when thenozzle is broken, acts'to hold the valve seated.' 4

In testimony whereof I afiix my signature in presence of two witnesses.

ABRAM E. SMITH.

Witnesses:

ARTHUR T. HnA'rH, R. C. EUSTIGE.

five cents each, by addressing the Commissioner of Patents, Washington,I). 0.

